17890020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5231}}^1$

素因数の和:5265

約数の個数: 72

約数和(自身を含む): 57133440

約数和(自身を除く): 39243420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 5231, 10462, 15693, 20924, 26155, 31386, 47079, 52310, 62772, 78465, 94158, 99389, 104620, 156930, 188316, 198778, 235395, 298167, 313860, 397556, 470790, 496945, 596334, 894501, 941580, 993890, 1192668, 1490835, 1789002, 1987780, 2981670, 3578004, 4472505, 5963340, 8945010, 17890020]

約数ペア:

[(1, 17890020), (2, 8945010), (3, 5963340), (4, 4472505), (5, 3578004), (6, 2981670), (9, 1987780), (10, 1789002), (12, 1490835), (15, 1192668), (18, 993890), (19, 941580), (20, 894501), (30, 596334), (36, 496945), (38, 470790), (45, 397556), (57, 313860), (60, 298167), (76, 235395), (90, 198778), (95, 188316), (114, 156930), (171, 104620), (180, 99389), (190, 94158), (228, 78465), (285, 62772), (342, 52310), (380, 47079), (570, 31386), (684, 26155), (855, 20924), (1140, 15693), (1710, 10462), (3420, 5231)]